Add chrome_cleaner/scanner dir

R=csharp

Bug: 830892
Change-Id: I8af09ba27cbc35d7bff39f4b7b6a9c972f1afc0d
Reviewed-on: https://chromium-review.googlesource.com/1175202
Commit-Queue: Joe Mason <joenotcharles@chromium.org>
Reviewed-by: Chris Sharp <csharp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585405}
20 files changed